Optimism Event Hacker Said via On-Chain Message that He Will Return 18 Million $OP

According to Optimism on-chain data, the hacker address of the 20 million $OP lost event sent another transaction to Vitalik wallet with a message saying "Hello, Vitalik, I believe in you, just want to know your opinion on this. BTW, help to verify the return address and I will return the remaining after you. And hello Wintermute, sorry, I only have 18M and this is what I can return. Stay Optimistic!"